Spreader



y 1942- E. H. OLSEN 2,282,205

SPREADER v Filed March 20, 1959 5 Sheets-Sheet 1 INVENTOR ATTORNEYS y 1942- E. H. OLSEN 2,282,205

SPREADER I H Filed March 20, 1959 3 Sheets-Sheqt 2 INVENTOR I ATTORNEYS i 9 f E. H. CLS EN I 2,282,205

SPREADER Filed March 20, 19259 3 Sheets-Sheet 3 INVENTOR ATTO R N EYS Patented May 5, 1942 SPREADER Eric H. Olsen, Salt Lake City, Utah, assignor of one-half to David B. Harman, Midvale, Utah Application March 20, 1939,. Serial No. 263,07

3 Claims.

My invention relates to the treatment of road surfaces with material such as sand, gravel, salt, Cinders, etc., and has among its objects and advantages the provision of an improved spreader.

An object of my invention is to provide a spreader in the nature of a hopper mechanism which may be attached to a conventional dump truck in which a novel material feeding element is incorporated to be driven by one of the wheels of the truck wherein the hopper mechanism is provided with suspension hooks so designed as to accurately adapt the hopper mechanism to the dump truck.

A further object is to provide a spreader adapted for connection with a dump truck for receiving material therefrom in which a novel discharge feeder is incorporated in the hopper unit together with an adjustable door to facilitate delivery of predetermined amounts of treating material to the road surface. The feed element is of the rotary type driven through the medium of a transmission frictionally related to one of the truck wheels in which reversing means are incorporated in the transmission so as to impart positive rotary motion to the feed element in both forward and rearward movement of the truck.

In the accompanying drawings:

Figure 1 is a side elevational view of a portion of a dump truck illustrating my invention applied thereto;

Figure 2 is a rear elevational tion; I

Figure 3 is an elevational View of side of the hopper unit; 7

Figure 4 is an enlarged sectional view taken along the line 4-4 of Figure 2;

Figure 5 is a view of one of the bracket units associated with the hopper;

Figure 6 is a view of another bracket;

Figure 7 is a view of one of the hopper suspending hooks;

Figure 8 is a View taken along the line 8-8 of Figure l; and

Figure 9 is a view of another bracket.

In the embodiment selected to illustrate my invention, I make use of a dump truck which may be any one of the many conventional types. Figure 1 illustrates a portion of a conventional dump truck, wherein the body It] is pivotally mounted at l2 on the vehicle support-ing frame 14, the rear end of which is associated with the rear traction wheels IS in the usual manner. Body I0 may be pivoted to different angular positions for dumping its load from the open rear view of my inventhe forward end, which end is normally closed by an end gate [8 pivotally connected at 20 with a suitable supporting structure 22'. Figure 1 illustrates the body.

It tilted for dumping its load into the hopper and spreader unit 24 which comprises my invention. Unit 24 comprises end walls 26,,a front wall 28 and a rear wall 30, the walls 28 and 30 being arranged in converging relation downwardly as illustrated in Figure 4. End walls 26 and the walls 28 and 30 are connected into a unitary structure through the medium of brackets 32 riveted to their respective walls at 34. Wall 28 is somewhat wider than the wall 30 and is bent rearwardly at 36 with its curved edge 38 located substantially in a plane common to the wall 3fi, but spaced from its lower edge. In a plane with the wall 30 I position a door 40 which has its lower edge lying in close relation with the feed screw 42 which extends the full length of the hopper. Door 40 is hingedly connected at 44 with the wall 30 and may be swung outwardly in the direction of the arrow 46 to vary the amount of material to be 'fed ontothe road surface. Feed screw 42 is rotatably mounted and includes a cylindrical body 48 and spiral vanes 50 for imparting positive action to the material being spread. Wall 30 is provided with a longitudinal angle 52 and the door 40 is provided with a similar angle 54, both of which may be riveted to their respective parts. Compression springs 56 are mounted on bolts 53 slidable through openings in the angle 54 and provided with nuts underneath the angle, see Fig. 4. The upper ends of the bolts terminate in heads 62 against which the springs 56 bear, and the heads are pivotally connected at 64 with arms 66 fixedly connected with a shaft 68 rotatably supported in brackets 16 riveted to the angle 52. One end of the shaft 68 is provided with a lever 12 associated with a quadrant 14 through the medium of which the lever may be latched in dilferent positions. Figure 1 illustrates the lever adjusted for supporting the door 48 in its maximum closed posi-f tion of Figure 4. In the position of Figure 4, the door may be swung open against the tension of the springs 56 in .the event that a large piece of material should wedge between the feed screw 42 and the lower edge of the door. The door may be swung to a more open position in the direction of the arrow 46 through adjustment of the lever 72. In all positions of the lever 12, the springs fifi'may yield to accommodate an occasional large piece of material so as to afford protection 'for the door.

Means for connecting the hopper with the with a shaft truck body I comprises two upstanding bars 16 each provided with a perforated bar 18 fixedly I i related thereto through the medium of a spacer 80 and the offset end 82. Bars 16 and 18 may be welded into a unitary structure and the unit may be welded to the wall 30. Each bar 18 is provided with a hook 84 which hook includes a pin 86 arranged to pass through one of the perforations in the bar. A cotter pin 88 may be passed through an opening in the pin 86 for latching the hook against accidental disconnection from the bar.

Each hook includes a depending reach 90 provided with an opening 92 for slidably receiving L its respective bar 18 so that the hook may be ad-' 1 justed longitudinally of the bar and latchedin different positions depending upon the requireprovided with a shaft part 2I0.

chain 204 passing around a sprocket 206 fixedly connected with the shaft 208 comprising an extension of the feed screw 42. The screw is also 2 I 0 are rotatablyjournaled in bearings 2 I 2 welded to the end walls 26.

ments of the particular end ga'tejIB of the truck. Hooks 84 are hooked over the upper edge of the end gate I8 in the manner of Figure l .for sup- I "porting the load of the hopper. vL'In Figures 1' and 4, I illustrate the meansfor imparting rotation to the feed screw .42. A

roller or drum 94 is provided with a rubber covering 96 arranged to frictionally engage one of the traction wheels I6 for imparting rotation to the, drum. Lining 96 vis-fixedly connected with the.

drum and provides a frictional surface which imparts positive rotation to the drum through rota-. Drum 94 is provided with a shaft 98 rotatably journaled in tion of thetraction wheel I6.

spaced plates I00 which are supported in spaced and fixed relation through the medium of a bracket I02, see FigureQ; .The bracket includes flanges I04 and I06 which are riveted to the plates Bracket I02 is made upof bars;

I00, asat I08. welded into the configuration of Figure 9.

.To the wall 281 connect. two brackets IIO through the, mediumofbolts II2 between which brackets I pivotally connect a frame I I4, see Figure 5, throughthe medium. of bolts II6. Frame II4 is made up of straps I I8,-- I2,0 and I22. Straps I and I22 ,are welded into, a unitary structure at I24 and the straps are riveted to the side straps H8 at I26... 'Ihe lower end of the frame II4 is pivotally connected witha shaft I28 carried by the plates I00. Bracket I02 includes a projec tion; I30 provided with an opening I32 for the reception of a clevis I34, see Figure 1, which is connected with a chain I36. connected with a tension spring. I38. The opposite end of the tension spring is connected with a chain I provided witha hook I42 arranged to hook over a pin I44 anchored in the bed I46of the truck body I0. Thus the pring, I38 yieldingly holdsthe drum 94 in frictional relation with the traction wheel [6; Each end wall 26 isprovided with a hook I48 connected with a chain I50 in which I interpose a chain tightener I52. The opposite end'of thechain includes a hook I54 arranged to hook into thelink I56 of achain I58 anchored at I60 to the bed I46. Chains'I50 cooperate with the hooks; 84 for holding the hopper mechanism in proper operating relation with the truck body.

' The shaft 98 of the drum 94 is provided with a sprocket, [62, see Figure 1, connected with a chain I64 which passes around a sprocket I66 connected I68 rotatably journaled in the plates I00. Projection I30 is provided with an opening I10 for loosely accommodating the shaft I68, see Figure 4. Referring to Figure 2, the shaft I68 is connec ed with a shaft I12 through the medium of a universal joint I14. Shaft I12 is provided with asquare end I16 telescopically related to the shaft part I18 connected with a shaft I 80 through the medium of a universal joint I82, see Figures Figure 8 illustrates the shaft I80 as being provided with reduced reaches 2I4 and 2I6 upon whichthe gear I90 and the sprocket 200 are respectively mounted to restrain the same from relative longitudinal shifting. The central part of the shaft is provided with a loose sleeve 2I8 provided with an angular slot 220 through which a pin 222 extends, which pin is fixedly connected with the shaft I80. Rotation of the universal joint I82 in the direction of the arrow 224 causes the pin 222 to cam. the sleeve 2I8 in the direction of the arrow 226 which moves a plurality of dogs 228 on one end of the sleeve into connected relation with dogs 230 on the hub of the sprocket 200 for rotating the feed screw 42 in a clockwise direction when viewing Figure 4. This is the normal direction of rotation of the screw during forward travel of the truck. Backward travel of the truck will cause the pin 222 to shift the sleeve 2I8 in the opposite direction for bringing a plurality of dogs 232 on the other end of the sleeve into engagement with the dogs 234 on the idle gear I90 which rotates the shaft l94' through the medium of the gear I92. Thus the feed screw 42 will be rotated in a clockwise direction even though the truck is moved backwardly. To'effect positive shifting of the sleeve 2I8 I provide a compression spring 236 which isinterposed be- I tween the frame I86 and the sleeve to resist rotary motion of the sleeve to such a degree as to insure endwise movement thereof through the medium of the pin 222.

To the brackets IIO I rivet the ends 238 of a frame 240, see Figure 6, which frame is bolted at 242 to a channel 244 bolted at 246 to a channel 248 welded to the wall 28. Frame 240 includes spaced ends 250 which are welded to a ring 252 within which I pivot a disc 254 upon pins 256 constituting extensions of bolts 258 threaded into the bosses 260 welded to the ends 250. Disc 254 is slotted at 262 for slidably receiving a bar 264 fixedly connected at 266 with a flange 268 carried by the frame I02. Thus the drum 94 may be pulled away from the traction wheel I6 through the medium of the bar 264 and latched in such withdrawn position by inserting a bolt through one of a series of openings 210 in the bar to lie adjacent the face 212 of the disc. Such-adjustment of the drum 94 will pivot the plates I00 downwardly about the shaft I28, which adjustment will also shift the shaft I10 downwardly.

Shafts 208 andspreading road surfacing material in a uniform manner upon the face of the road. The unit is easily and quickly connected with the truck body and one of the rear wheels of the truck constitutes a source of power for the feed screw. Door 45] is adjustable to vary the amount of material delivered to the road surface. The door 40 cannot swing inwardly beyond the position of Figure 4 because of the abutting relation between the hinges 44 and the flange 214 extending along the lower edge of the wall 30. However, the door 40 is free to swing outwardly.

I claim:

1. In a dump truck having a traction wheel, a hopper mounted on the dump truck and having an opening in its bottom, a rotary feed member lying in said opening, a first frame pivotally connected with said hopper, a second frame pivotally connected with said first frame, a rotary friction member carried by said second frame and engageable with one of said traction wheels to be rotated thereby, a third frame carried by said hopper, a telescopic shaft having universal joints rotatably carried by said second and third frames, a driving connection between said friction member and said telescopic shaft, and means for pivoting said first and second frames to respectively move said friction member into and out of engagement with said one of the traction wheels.

2. The invention described in claim 1 wherein there is provided a motion conversion means operatively connecting said telescopic shaft, with said rotary feed member and actuated through reverse rotation of said telescopic shaft for rotating said rotary feed member in one direction only regardless of the direction of rotation of said telescopic shaft.

3. The invention described in claim 1 wherein tensioning means interconnect the dump truck with said second frame for yieldingly holding said friction member against said one traction,

wheel.

ERIC H. OLSEN. 

